发明名称 FEEDBACK MECHANISM PROVIDING ROW-LEVEL FILTERING EARLIER IN A PLAN
摘要 According to present invention embodiments, methods, systems, and computer readable media of executing a database query are provided. One or more predicates are generated based on implicit filtering present within the database query, wherein each predicate specifies a condition with respect to a predicate value. An access path is selected for the database query based on the one or more predicates and the one or more predicates are integrated within the selected access plan. The database query is executed in accordance with the selected access plan. At least one predicate value based on data accessed is updated, as the database query is being executed, to increase filtering of data during remaining execution of the database query.
申请公布号 US2016055210(A1) 申请公布日期 2016.02.25
申请号 US201414465120 申请日期 2014.08.21
申请人 International Business Machines Corporation 发明人 Beavin Thomas A.;Dickie Garth A.;Finlay Ian R.;Purcell Terence P.
分类号 G06F17/30 主分类号 G06F17/30
代理机构 代理人
主权项
地址 Armonk NY US